For 12 weeks, the researchers kept tabs on nearly 2,000 ED sufferers who’d started taking the once-a-day drug tadalafil, aka Cialis. Apart from the increase in erections, the researchers recorded an 85 percent jump in sexual self-confidence thanks to the men’s newfound virility, a finding they based on the participants' answers on psychological questionnaires administered at various points throughout the study period. "Interaction between functional, physiological and psychological factors is integral in managing patients with ED," said Ashutosh Tewari, MBBS, MCh, Chairman of the Milton and Carroll Petrie Department of Urology at the Icahn School of Medicine at Mount Sinai, who was not a member of the research team. Learn more